extrusive Rock- igneous rock formed from lava that erupted onto Earth's surface intrusive rock- igneous rock that formed when magma hardened beneath Earth's suface porphyritic texture- a rock with larger crystals scattered on a background of much smaller crystals
Outline
Characteristics of Igneous Rock
igneous rock is either formed from lava or magma
most igneous rocks are made from mineral crystals
you can tell if there's an igneous rock from its origin, texture, and mineral composition
Origin
extrusive and intrusive rocks are the two types of igneous rocks
Igneous Rocks 5.2
Vocab
extrusive Rock- igneous rock formed from lava that erupted onto Earth's surfaceintrusive rock- igneous rock that formed when magma hardened beneath Earth's suface
porphyritic texture- a rock with larger crystals scattered on a background of much smaller crystals
Outline
Characteristics of Igneous Rock
- igneous rock is either formed from lava or magma
- most igneous rocks are made from mineral crystals
- you can tell if there's an igneous rock from its origin, texture, and mineral composition
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